Passive type constant tension hydraulic control system of mooring winch

Abstract

The invention relates to a passive type constant tension hydraulic control system of a mooring winch. The passive type constant tension hydraulic control system comprises a hydraulic pump, a two-directional hydraulic motor and a reversing valve, wherein an oil outlet of the hydraulic pump is connected with an oil port A of the reversing valve; a back pressure valve is connected in series between an oil port D of the reversing valve and an oil tank; a first oil feeding / discharging opening of the two-directional hydraulic motor is connected with an oil port B of the reversing valve through a first oil guide pipe; a second oil feeding / discharging opening of the two-directional hydraulic motor is connected with an oil port C of the reversing valve through a second oil guide pipe; a balance valve is connected in series between the first oil feeding / discharging opening of the two-directional hydraulic motor and the oil port B of the reversing valve; a control oil port of the balance valve is connected with the second oil guide pipe; a needle adjustment valve is connected in series between the control oil port of the balance valve and the second oil guide pipe; the passive type constant tension hydraulic control system further comprises a pilot overflow valve connected in parallel with the two-directional hydraulic motor; and a remote control port of the pilot overflow valve is connected in series with a remote control overflow valve. The system is high in reliability, easy to operate and low in cost.

Description

technical field [0001] The invention relates to a passive constant tension hydraulic control system of a mooring winch, which belongs to the technical field of hydraulic control. Background technique [0002] When an ordinary marine crane is operating at sea, the hoisting machine is used to rotate and change the span of the boom, and the lifting hook is moved to the top of the cargo yard of the own party, and the cargo is lifted and then moved to the cargo yard of the target ship, and the cargo is lowered to realize the load. For shore / ship or ship / ship-to-ship lifting. Due to the relative up-and-down movement between operating ships due to the influence of wind and waves, the load being lowered will collide with the rising hull, or the load that has been lowered on the deck will be suspended again due to the sinking of the hull. It will adversely affect the efficiency and safety of barge lifting at sea. Especially when dangerous goods such as ammunition are supplied to th...

AI Technical Summary

Problems solved by technology

[0003] Chinese patent ZL201120135854.2 constant tension wave compensation device discloses a constant tension wave compensation device for fast wave compensation before hoisting of a heavy marine crane to select the best lifting time; but the constant tension compensation device depends on another constant tension The winch and a set of constant tension logic signal processing system are used to realize constant tension control, so there are disadvantages of complex equipment, low reliability and high cost

Images